simplify user_angeltype_add_controller

includes/controller/angeltypes_controller.php

@@ -101,6 +101,7 @@ function angeltype_delete_controller() {
 function angeltype_edit_controller() {
   global $privileges, $user;
   
+  $angeltype = null;
   $name = "";
   $restricted = false;
   $description = "";
@@ -266,4 +267,24 @@ function angeltypes_list_controller() {
       AngelTypes_list_view($angeltypes, in_array('admin_angel_types', $privileges)) 
   ];
 }
+
+/**
+ * Loads an angeltype from given angeltype_id request param.
+ */
+function load_angeltype() {
+  if (! isset($_REQUEST['angeltype_id'])) {
+    redirect(page_link_to('angeltypes'));
+  }
+  
+  $angeltype = AngelType($_REQUEST['angeltype_id']);
+  if ($angeltype === false) {
+    engelsystem_error("Unable to load angeltype.");
+  }
+  if ($angeltype == null) {
+    error(_("Angeltype doesn't exist."));
+    redirect(page_link_to('angeltypes'));
+  }
+  
+  return $angeltype;
+}
 ?>

includes/controller/user_angeltypes_controller.php

@@ -310,46 +310,30 @@ function user_angeltype_update_controller() {
  * User joining an Angeltype (Or Coordinator doing this for him).
  */
 function user_angeltype_add_controller() {
-  global $user, $privileges;
+  global $user;
   
-  if (! isset($_REQUEST['angeltype_id'])) {
-    error(_("Angeltype doesn't exist."));
-    redirect(page_link_to('angeltypes'));
+  $angeltype = load_angeltype();
+  
+  // User is joining by itself
+  if (! User_is_AngelType_coordinator($user, $angeltype)) {
+    return user_angeltype_join_controller($angeltype);
   }
   
-  $angeltype = AngelType($_REQUEST['angeltype_id']);
-  if ($angeltype === false) {
-    engelsystem_error("Unable to load angeltype.");
-  }
-  if ($angeltype == null) {
-    error(_("Angeltype doesn't exist."));
-    redirect(page_link_to('angeltypes'));
-  }
-  
-  if (User_is_AngelType_coordinator($user, $angeltype)) {
   // Allow to add any user
-    $user_id = $user['UID'];
   
+  // Default selection
+  $user_source = $user;
+  
+  // Load possible users, that are not in the angeltype already
   $users_source = Users_by_angeltype_inverted($angeltype);
   if ($users_source === false) {
     engelsystem_error("Unable to load users.");
   }
   
   if (isset($_REQUEST['submit'])) {
-      $valid = true;
+    $user_source = load_user();
     
-      if (isset($_REQUEST['user_id']) && in_array($_REQUEST['user_id'], array_map(function ($user) {
-        return $user['UID'];
-      }, $users_source))) {
-        $user_id = $_REQUEST['user_id'];
-      } else {
-        $valid = false;
-        error(_("Please select a user."));
-      }
-      
-      if ($valid) {
-        foreach ($users_source as $user_source) {
-          if ($user_source['UID'] == $user_id) {
+    if (! UserAngelType_exists($user_source, $angeltype)) {
       $user_angeltype_id = UserAngelType_create($user_source, $angeltype);
       if ($user_angeltype_id === false) {
         engelsystem_error("Unable to create user angeltype.");
@@ -367,15 +351,19 @@ function user_angeltype_add_controller() {
       redirect(page_link_to('angeltypes') . '&action=view&angeltype_id=' . $angeltype['id']);
     }
   }
-      }
-    }
   
   return [
       _("Add user to angeltype"),
-        UserAngelType_add_view($angeltype, $users_source, $user_id) 
+      UserAngelType_add_view($angeltype, $users_source, $user_source['UID']) 
   ];
-  } else {
-    // Allow only me
+}
+
+/**
+ * A user joins an angeltype.
+ */
+function user_angeltype_join_controller($angeltype) {
+  global $user, $privileges;
+  
   $user_angeltype = UserAngelType_by_User_and_AngelType($user, $angeltype);
   if ($user_angeltype === false) {
     engelsystem_error("Unable to load user angeltype.");
@@ -411,7 +399,6 @@ function user_angeltype_add_controller() {
       UserAngelType_join_view($user, $angeltype) 
   ];
 }
-}
 
 /**
  * Route UserAngelType actions.

includes/controller/users_controller.php

@@ -299,4 +299,25 @@ function user_password_recovery_title() {
   return _("Password recovery");
 }
 
+/**
+ * Loads a user from param user_id.
+ */
+function load_user() {
+  if (! isset($_REQUEST['user_id'])) {
+    redirect(page_link_to());
+  }
+  
+  $user = User($_REQUEST['user_id']);
+  if ($user === false) {
+    engelsystem_error("Unable to load user.");
+  }
+  
+  if ($user == null) {
+    error(_("User doesn't exist."));
+    redirect(page_link_to());
+  }
+  
+  return $user;
+}
+
 ?>

includes/model/UserAngelTypes_model.php

@@ -4,6 +4,24 @@
  * User angeltypes model
  */
 
+/**
+ * Checks if a user joined an angeltype.
+ *
+ * @param User $user
+ *          The user to be checked
+ * @param Angeltype $angeltype
+ *          The angeltype to be checked
+ * @return boolean
+ */
+function UserAngelType_exists($user, $angeltype) {
+  return sql_num_query("
+      SELECT `id` 
+      FROM `UserAngelTypes`
+      WHERE `UserAngelTypes`.`user_id`='" . sql_escape($user['UID']) . "'
+      AND `angeltype_id`='" . sql_escape($angeltype['id']) . "'
+      ") > 0;
+}
+
 /**
  * List users angeltypes.
  *